Laser fluorescence spectroscopy of zinc neutrals originating from laser-irradiated and ion-bombarded zinc sulfide and zinc surfaces

Conference · Mon Feb 01 04:00:00 EST 1988

OSTI ID:5184081

Arlinghaus, H F; Calaway, W F; Young, C E; Pellin, M J; Gruen, D M; Chase, L L

Time-of-flight (TOF) measurements, employing high-resolution laser-induced fluorescence spectroscopy (LFS) as a probe, have been used to measure the yield and velocity distribution of Zn atoms ejected from a ZnS single crystal under irradiation by 308 nm photons. By comparison with the known ion sputtering yield for pure zinc, the absolute yield was determined to be 10/sup 10/ atomspulse at a laser fluence of 30 mJcm/sup 2/. The velocity distribution of the Zn atoms could be fitted by a Maxwell-Boltzmann distribution, having a characteristic temperature of 2360)degree)K. In addition, Doppler-shift techniques have been combined with TOF measurements in order to separate prompt from delayed emission of ablated atoms, as well as to probe possible molecular or cluster fragmentation. The results obtained suggest the possibility of molecular or cluster emission from ZnS. 17 refs., 7 figs.

• Research Organization: Argonne National Lab., IL (USA); Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48; W-31109-ENG-38
• OSTI ID: 5184081
• Report Number(s): UCRL-98168; CONF-8710165-13; ON: DE88008037
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360605* -- Materials-- Radiation Effects
ABLATION
ATOMS
CHALCOGENIDES
CRYSTALS
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION
EMISSION SPECTROSCOPY
FLUORESCENCE SPECTROSCOPY
INORGANIC PHOSPHORS
LASER RADIATION
METALS
MONOCRYSTALS
PHOSPHORS
PHOTOEMISSION
RADIATIONS
SECONDARY EMISSION
SPECTROSCOPY
SULFIDES
SULFUR COMPOUNDS
ZINC
ZINC COMPOUNDS
ZINC SULFIDES